When you have a question to ask your teacher,say "_____ " first.Then ask your question.

问题描述:

When you have a question to ask your teacher,say "_____ " first.Then ask your question.
A.Thank you.
B.I am sorry.I don't understand.
c.Can you help me?

选C 表示你能帮助我吗
其他语义不符 B是我很抱歉 我不理解
希望对你有所帮助 新年快乐